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The effect of gossypol on the rumen microbial degradation of grass hay under consecutive batch culture (CBC)

Published online by Cambridge University Press:  24 November 2017

Ismartoyo ,
T. Acamovic  and
C.S. Stewart
Ismartoyo
Affiliation:
SAC, 581 King street, Aberdeen, AB9 1UD
T. Acamovic
Affiliation:
SAC, 581 King street, Aberdeen, AB9 1UD
C.S. Stewart
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen, AB2 9SB
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Extract

Gossypol ﹛2,2'-bi(8-Formyl-l,6,7 trihydroxy-5-isopropyl-3-methyl naphthalene)﹜ is a toxic polyphenolic factor indigenous to the cotton plant. Concentrations of free gossypol contained in such feed stuffs as whole cottonseed (WCS) vary considerably. WCS is fed widely to animals. Free gossypol is extractable with aceton-water (70:30) and is toxic to monogastric animals. Bound gossypol has been considered relatively non-toxic. Calhoun et al (1991) has demonstrated there was extensive binding of free gossypol in ruminant digestive system. But they did not support the suggestion that bound gossypol is released during digestion in the small intestine. The present experiment examined the effect of gossypol on the rumen microbial degradation of grass hay (GH) under CBC. In sacco rumen digestion was also conducted to examine DM, CP and ADF digestibilities of grass hay and whole cottonseed at 48 h.

Type
Ruminant Metabolism
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1993: Winter meeting , March 1993 , pp. 171
Copyright
Copyright © The British Society of Animal Production 1993

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References

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